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Java example source code file (WaitingThreadAborter.java)

This example source code file (WaitingThreadAborter.java) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" TM.

Java tags/keywords

notthreadsafe, waitingthread, waitingthreadaborter

The WaitingThreadAborter.java example source code

/*
 * ====================================================================
 *
 *  Licensed to the Apache Software Foundation (ASF) under one or more
 *  contributor license agreements.  See the NOTICE file distributed with
 *  this work for additional information regarding copyright ownership.
 *  The ASF licenses this file to You under the Apache License, Version 2.0
 *  (the "License"); you may not use this file except in compliance with
 *  the License.  You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 *  Unless required by applicable law or agreed to in writing, software
 *  distributed under the License is distributed on an "AS IS" BASIS,
 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *  See the License for the specific language governing permissions and
 *  limitations under the License.
 * ====================================================================
 *
 * This software consists of voluntary contributions made by many
 * individuals on behalf of the Apache Software Foundation.  For more
 * information on the Apache Software Foundation, please see
 * <http://www.apache.org/>.
 *
 */

package org.apache.http.impl.conn.tsccm;

import org.apache.http.annotation.NotThreadSafe;

// TODO - only called from ConnPoolByRoute currently; consider adding it as nested class
/** 
 * A simple class that can interrupt a {@link WaitingThread}.
 * 
 * Must be called with the pool lock held.
 * 
 * @since 4.0
 */
@NotThreadSafe
public class WaitingThreadAborter {
    
    private WaitingThread waitingThread;
    private boolean aborted;
    
    /**
     * If a waiting thread has been set, interrupts it.
     */
    public void abort() {
        aborted = true;
        
        if (waitingThread != null)
            waitingThread.interrupt();
        
    }
    
    /**
     * Sets the waiting thread.  If this has already been aborted,
     * the waiting thread is immediately interrupted.
     * 
     * @param waitingThread The thread to interrupt when aborting.
     */
    public void setWaitingThread(WaitingThread waitingThread) {
        this.waitingThread = waitingThread;
        if (aborted)
            waitingThread.interrupt();
    }

}

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